Pretty much every Kirby game ever. Emulating them is fun and usually works fine, but I would love to see how great the games would look and run if specifically remastered (I mean a technical remaster, not graphical) to run on PC in high-resolution. When I play Kirby 64, I love to play it on PC, and it runs quite well on 1080p, but emulators always run slower when compared to natively running games. Also it would be great to be able to play optimized ported versions of Seaman, Endless Ocean 1 and 2, Dementium (Great game series for the DS, but the current Dementium II HD PC port on Steam is dogshit and doesn't count), and all of those Valve games that were made for/ported to arcades and other platforms nobody seems to be familiar with (FYI there's like 6 unique Valve games for arcades alone).